System and method for prioritized data delivery in an electronic trading environment

ABSTRACT

A system and method for prioritized data delivery in an electronic trading environment are described herein. According to one example embodiment, by prioritizing the messages associated with a tradeable object, the bandwidth and system resource usage may be optimally reduced, and any loss of priority content in the messages sent between the network device and the client device may be reduced. An example method includes associating different priority levels with messages comprising market data. Messages containing market information related to the inside market may be associated to a higher priority level. Whereas messages containing market information relating to the quantities at prices outside the inside market may be associated with a lower priority level. Based on the priority level associated with a message, a network device may send the message directly to the client device or store the message in a data structure until a pre-defined condition is satisfied.

CROSS REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. patent application Ser. No.11/551,567, filed Oct. 20, 2006, entitled “System and Method forPrioritized Data Delivery in an Electronic Trading Environment,” thecontents of which are fully incorporated herein by reference.

FIELD OF INVENTION

The present invention is directed towards electronic trading.Specifically, the present invention is directed towards prioritized datadelivery in an electronic trading environment.

BACKGROUND

At one time, there were only open-outcry exchanges where traders,specifically buyers and sellers, would come together to trade in person.With the advent of electronic trading, traders can participate at theirclient devices from remote distances by communicating over physicalnetworks with electronic exchanges that automatically match bids andoffers.

In particular, subscribing traders are connected to an exchange'selectronic trading platform by way of a communication link and throughan application program interface to facilitate real-time electronicmessaging between themselves and the exchange. The electronic tradingplatform includes at least one electronic market, which is at the centerof the trading system and handles the matching of bids and offers placedby the traders for that market. The electronic messaging includes marketinformation that is distributed from the electronic market to thetraders via an electronic data feed. Once the traders receive the marketinformation, it may be displayed to them on their trading screens. Uponviewing the information, traders can take certain actions including theactions of sending buy or sell orders to the electronic market,adjusting existing orders, deleting orders, or otherwise managingorders. Traders may also use software tools on their client devices toautomate these and additional actions.

Although the amount or type of market information published by anelectronic exchange often differs from exchange to exchange or frommarket to market, there are generally some standard pieces ofinformation. Market information may include data that represents justthe inside market. The inside market is the lowest available offer price(best ask) and the highest available bid price (best bid) in the marketfor a particular tradeable object at a particular point in time. Marketinformation may also include market depth. Market depth refers toquantities available at the inside market and may also refer toquantities available at other prices away from the inside market. Thequantity available at a given price level is usually provided by theexchange in aggregate sums. In other words, an exchange usually providesthe total buy quantity and the total sell quantity available in themarket at a particular price level in its data feed. In addition toproviding order book information such as price and quantity information,electronic exchanges can offer other types of market information such asthe open price, settlement price, net change, volume, last traded price,the last traded quantity, and order fill information.

The extent of the market depth available to a trader usually depends onthe exchange. For instance, some exchanges provide market depth for all(or most) price levels, and others may provide no market depth at all.Electronic exchanges often limit the market depth offered as marketinformation can become intensive for network and client devices. Forinstance, an electronic market might offer only “5” levels of marketdepth, which includes the quantities available at the current top “5”buy prices and the quantities available at the current top “5” sellprices.

Regardless of whether an electronic exchange limits the enormous amountof messages being broadcast, very often the intermediary and clientdevices may have to handle the burden and consequently can beoverwhelmed. At times, the intermediary and client devices may be unableto handle the massive processing load and, at least during those times,they cannot maintain near real-time data processing. Additionally, asmore traders begin trading in electronic trading environment, the loadon the intermediary and client devices is likely to continue growing atan increased rate.

Electronic exchanges and/or distributors of market information oftenstruggle to balance the message processing load and the timeliness ofmarket information messages with the limitations of physical networks todeliver a network friendly, data intensive, fast response marketinformation feed. Most often, traders want access to as much of thisinformation as fast as possible so that they can make more efficient andmore effective trades. However, due to the trader's demands for nearreal-time market information updates, many client devices have sufferedfrom delays in market information updates and on occasion the loss ofcontent in the market information updates that are received.

Despite the attempts made by electronic exchanges and others to improvethe distribution of market information, by for example, limiting themarket depth, there are still many disadvantages to the current methodsof distribution, or at the very least the current solutions areincomplete.

It is therefore, beneficial to provide a trading system that offers amore dynamic method for distributing market information that willprovide the traders with their desired market information as quickly aspossible.

SUMMARY

The example embodiments are directed to a system and method forprioritized data delivery in an electronic trading environment. Byprioritizing the messages associated with a tradeable object, thecomputer and network resources may be optimally utilized, and thepossibility of any loss of priority content between the network andclient device may be reduced. The system and method are premised on aconcept that certain pieces of market data are more important to tradersthan others. For example, a trader might base most of his or herdecisions on changes of the inside market, while placing less emphasison what is occurring at prices outside of the inside market. In anotherexample, a trader might place more emphasis on last trades or some otheritem of interest. The system and method builds on this premise toprovide an efficient mechanism for data distribution in a way that doesnot significantly inhibit the delivery of important pieces of marketdata to the trader. Thus, the system and method provides that the tradergets the information that is most important to him or her, while at thesame time reduces the burden on intermediary and client side devices.

To facilitate prioritized data delivery according to one example methoddescribed herein, the system includes associating a lower priority levelwith a message comprising market data related to quantities at pricesoutside of the inside market and associating a higher priority levelwith a message comprising market information related to the insidemarket or trade related information. A network device, or some otherintermediary device, may store any low priority market data in a datastructure. The system will then coalesce the low priority data in aneffort to reduce the necessary amount of data that is to be sent to theclient. If and when a higher priority message is received, thecoalesced, lower priority market data and the higher priority marketdata will be sent directly (or as soon as possible) to the clientdevice. Sending the high and low priority market data together providesthat the client will have the most up to date data and accuraterepresentation of the current market.

Receiving a high priority message is an example of a triggering event,or pre-defined condition, which triggers the low priority market dataand the high priority market data to be sent to the client devicetogether. Other pre-defined conditions may also be programmed inaddition to, or in place of, the receipt of a high priority message. Forinstance, a pre-defined condition might also include a time period, acalculation, or some other user-defined process that determines when tosend messages to the client device.

The system and method facilitate prioritized data delivery in a way thatbenefits the trader and reduces the overall burden on system and networkresources. While some illustrations have been provided above, additionalexamples are provided herein. Modifications may also be made to thesystem and method without departing from the spirit or scope of theinvention. Additional features and advantages of the example embodimentswill be set forth in the description that follows. The features andadvantages of the example embodiment may be realized and obtainedthrough the embodiments particularly pointed out in the appended claims.These and other features will become more fully apparent from thefollowing description and appended claims, or may be learned by thepractice of the example embodiments as set forth hereinafter.

BRIEF DESCRIPTION OF DRAWINGS

Example embodiments are described herein with reference to the followingdrawings, in which:

FIG. 1 is a block diagram illustrating an example system that providesprioritized data delivery in an electronic trading environment;

FIG. 2 is a timeline illustrating messages flowing through the examplesystem shown in FIG. 1; and

FIG. 3 is a flow chart illustrating an example method for prioritizeddata delivery in an electronic trading environment.

DETAILED DESCRIPTION I. Overview

A system and method for prioritized data delivery in an electronictrading environment are provided. The messages described herein includemarket information related to one or more tradeable objects that aretraded at an electronic exchange. The example embodiments areparticularly useful when the market is fluctuating rapidly and massiveamounts of market updates, in the form of messages, are being sent fromthe electronic exchange. Although the example embodiments may be usefulat other times during the course of a trading day to optimally utilizethe network and system resources. According to the example embodiments,optimal utilization of system resources is provided by giving messagesof less significance to a trader a lower priority of delivery to theclient device. Messages that relate to the inside market or containtrade related market information, such as last traded price and lasttraded quantity, are generally of the utmost importance to a trader andmay be considered a higher priority. Those high priority messages may beushered through the system with a higher priority than messages thatrelate to quantities at prices outside of the inside market.

While the example embodiments are directed towards operation at anintermediary device, such as a gateway that is positioned between anelectronic exchange and the client device, it should also be understoodthat the prioritization of messages may very well take place at theelectronic exchange, such that the messages sent from the exchange tothe intermediary device are already prioritized.

Associating a priority level with a message can be based on manydifferent pre-set criteria, which can be configured by the programmer ofthe system or even the trader himself or herself, if so desired. Forexample, as will be discussed further below, traders generally base theplacement of their orders on the inside market prices, movements, andquantities at the inside market prices. As the inside market generallyrepresents the most precise current state of the market, it isbeneficial that the inside market is displayed or processed by thetrading system as quickly and as accurately as possible, with a latencyas close to zero as possible. Latency is defined herein as the time ittakes for a message to move across a network connection from the messageorigin to the message destination. The priority level associated with amessage may determine whether and how quickly the message will berelayed to the client device.

A trader might also define a range of price levels around the insidemarket that the trader is most interested in. When a message is receivedthat includes market information relating to a market change within thespecified range of price levels, then that message may also beassociated with the higher priority level. It should be understood thatmultiple levels of priority can be defined by the trader using anynumber of pre-set criteria.

Trade related information such as last traded price and last tradedquantity, may be as important or more important to a particular trader,and therefore, the trade related information can be included with (orsubstituted with) the inside market when the “inside market” is referredto herein. If another item of interest is deemed important to a certaintrader, then it is preferable that the system can be configured to givethat item of interest a higher priority (so any item of interest may besubstituted for the “inside market” as used herein).

Oftentimes, the data relating to quantities at prices outside of theinside market are not as high of a priority to the trader as the insidemarket data. The amount of time a trader spends analyzing quantities atprices outside of the inside market, may in some instances, beconsidered minimal by comparison. Therefore, data relating to thequantities at prices outside of the inside market are not subject toimmediate matching or market changes and are generally considered to benot as important and may not be immediately sent, depending on theconditions, to the client device. According to one example embodiment,messages containing such market data may be buffered and then stored ina data structure until a pre-defined condition is satisfied. Messages ofthe lower priority may be coalesced, or overwritten, by more recentlower priority information. Coalescing is defined herein asconsolidating multiple market information updates with other relatedmarket information updates to create a single update.

As previously stated, the pre-defined condition might be a time period,the receipt of a higher priority message at the intermediary device, acalculation, or some other user-defined process used to determine whento send messages to the client device.

While the example embodiments are described herein with reference toillustrative embodiments for particular applications, it should beunderstood that the example embodiments are not limited thereto. Othersystems, methods, and advantages of the present invention will be orbecome apparent to one with skill in the art upon examination of thefollowing drawings and description, such as giving another item ofinterest a higher priority. As previously stated, it is intended thatall such additional systems, methods, features, and advantages be withinthe scope of the present invention, and be protected by the accompanyingclaims.

II. Hardware and Software Overview

According to the example embodiments, the communication between anelectronic exchange and a client device involves an exchangebroadcasting messages to a connecting network device such as a gatewayor router (or some other intermediary device, collectively referred toherein as a “gateway”), and the network device then relaying the marketdata of that message to the client device. Software and hardwarecomponents or a combination thereof, at the gateway can implement theexample embodiments described herein.

For example, assume the gateway has received a message containing marketinformation from an electronic exchange. At a time of high messagetraffic, the gateway determines, based on the pre-set criteria, thepriority level of the message. If the message is of the lower prioritylevel, the gateway will store the market data from the message in a datastructure, where the most recent lower priority market data will bestored and coalesced with any previously stored lower priority marketdata, until a pre-defined condition is satisfied. An example list ofpre-defined conditions were described above. According to one examplepre-defined condition (i.e., receipt of a high priority message), if ahigher priority level message then arrives at the gateway, it will sendthe data of both the previously stored lower and the current higherpriority messages together to the client device. If a higher prioritymessage arrives at the gateway first and there is no lower prioritymessage data stored in the data structure, the higher priority messagedata will immediately be sent to the client device by itself.

Turning now to FIG. 1, which shows a block diagram illustrating anexample system utilized for prioritized data delivery in an electronictrading environment. Specifically, FIG. 1 includes an electronicexchange 102, a gateway 104, a client device 106, a message 108, and adata structure 110. Electronic exchange 102 may host one or morecomputer-based electronic markets. Traders may connect to the one ormore electronic markets to trade tradeable objects. Gateway 104 is anetwork device and includes one or more computers (or programs) runningsoftware that receives and transmits market information to and fromexchange 102 in the form of messages which may include price, order, andfill information. Client device 106 is a computer that receives one ormore messages from gateway 104. Also included in FIG. 1 is illustrativemessage 108. Message 108 contains market information relating to atradeable object. Message 108 may include current inside marketinformation, trade related information, or even market informationrelating to the current price levels outside the current inside market.Determining the actual contents of message 108 may be performed atgateway 104. Data structure 110 temporarily stores messages that aredetermined to be of a lower priority, more of which is described below.

A. Exchange

Exchange 102 broadcasts many different types of market informationmessages for connecting gateways, traders, brokers, etc. to receive.Gateway 104 connects to the exchange 102 to receive the broadcast marketinformation messages, which gateway 104 may then relay to client device106. It should be understood that a message from one exchange maycontain market information representing a different tradeable objectthan a message from a second exchange. As used herein, the term“tradeable object” refers to anything that can be traded with a quantityand a price. For example, tradeable objects may include, but are notlimited to, all types of traded financial products, such as, forexample, stocks, options, bonds, futures, currency, and warrants, aswell as funds, derivatives, and collections of the foregoing. Moreover,tradeable objects may include all types of commodities, such as grains,energy, and metals. Also, a tradeable object may be “real,” such asproducts that are listed by an exchange for trading, or “synthetic,”such as a combination of real products that is created by the trader(e.g. spread). A tradeable object could also be a combination of othertradeable objects, such as a class of tradeable objects or a tradingstrategy.

In general, a message from exchange 102 may include market informationrepresenting prices and quantities for a tradeable object. For example,the message could represent market information related to the insidemarket, such as the highest bid or the lowest ask, or market informationrelating to prices outside the inside market. It should be understoodthat the messages received from the electronic exchange may includeother data and should not be limited to the examples referenced above.

The electronic exchange may also broadcast separate messages containingtrade related market information, for example, market informationrelating to trade matches. A trade match is defined herein as anelectronic trading system matching a trader willing to buy a tradeableobject for a price to another trader offering to sell the same tradeableobject at the same or better price, resulting in a trade match.

A trade match message sent to a specific trader may include privateorder information such as last traded price and last traded quantity aswell as order number, account number, transaction code, price, time,quantity and tradeable object. Such a private order message is notbroadcast to all connected devices, as the electronic exchanges strivefor order anonymity between traders. The exchange also broadcastsmessages to generally let all traders know that matches have occurred atcertain price levels, without revealing any specific information, suchas who the order was placed by. Trade match message broadcast to alltraders may contain only public and anonymous order information, such aslast traded price and last traded quantity. A trade related message isthe primary public source for all traders to know what quantities andprices have been matched in the market. Messages related to tradeinformation may also be associated with the higher priority level andsent to the client device as quickly as possible.

One of ordinary skill will appreciate that any message or message typeprovided by an exchange can be utilized by the example embodiments andone could configure the system to work with those messages or messagetypes appropriately.

B. Gateway

As mentioned earlier, gateway 104 includes one or more computers (orprograms) running software that receives and transmits marketinformation to and from the exchange 102. As used herein, a computerincludes any device with memory and a processor capable of processinginformation to produce a desired result. Thus, a gateway can be acomputer of any size such as a network server, workstation, personalcomputer, or laptop, but generally, the gateway is any computer devicethat has the processing capability to perform the function describedherein.

According to the example embodiment, electronic exchange 102 broadcastsmessages containing market information and the connected gateway 104receives the messages. Gateway 104 then sends the message data to clientdevice 106. However, instead of sending each message data to clientdevice 106 as it is received, gateway 104 may optimally utilize thenetwork and system resources by prioritizing data delivery to clientdevice 106.

Data structure 110 is used to store the data of lower priority.Generally, data structures are used to store related market data suchthat it can be accessed and used efficiently. There are a variety ofdata structures known in the art; however, the described exampleembodiments should not be limited to one specific type of datastructure. It should also be understood that the data structure can belocated at the exchange or at the gateway or be in communication witheither or both.

Based on the pre-set criteria for determining the priority level of amessage, gateway 104 associates a priority level with each message as itis received. According to an example embodiment, gateway 104 determinesthe priority level of message 108 by examining the message header.Within the header portion of the message is a differentiating messagetype. Each message sent from an electronic exchange contains a messagetype. It should be understood, that message types may not be consistentfrom one exchange to another, so it is beneficial for a gateway to haveknowledge of the different possible types of messages. When a message isreceived at gateway 104, a simple determination of message type is madeby comparing the header to the already known message types. Based on themessage type of message 108, gateway 104 prioritizes the message, suchthat if the message includes higher priority market information themessage may be a “Higher Priority Message” and may be sent to the clientdevice without any delay. Alternatively, if the message is a “LowerPriority Message” containing lower priority market information, themarket information from the message will be stored in data structure 110until a pre-defined condition is satisfied. Once the pre-definedcondition is satisfied, gateway 104 will “Construct a Message” to sendto client device 106.

C. Client Device

As mentioned earlier, client device 106 is a computer that allows atrader to participate in the market at exchange 102. In general, it canuse software that creates specialized interactive trading screens on theclient device's terminal. The trading screens enable traders to enterand execute orders, obtain market quotes, and monitor positions. Therange and quality of features available to the trader on a tradingscreen varies according to the specific software application running,for example, black box trading software or strategy trading software.

II. Example System and Function Overview

FIG. 2 is a timeline illustrating messages arriving at the gateway fromthe electronic exchange and then being forwarded onto the client device.Specifically, FIG. 2 includes inbound messages to the gateway 202,outbound messages to the client device 204, high priority level messages206 and 212, lower priority messages 208 and 210, timeline 214, and datastructure 216. According to the example embodiments, when gateway 104,shown in FIG. 1, determines that the received message is of the higherpriority level, the data is sent to the client device. Otherwise,according to an example embodiment the message is stored, at leasttemporarily, at data structure 216. Directly below are some examples.

In FIG. 2, message 206 is received at the gateway and the gatewaydetermines the contents of message 206 and ultimately determines apriority level to associate with message 206. The gateway may determinethe priority level by examining the contents of the message header anddetermining if the message contains inside market information. Thegateway determines that message 206 contains data related to the insidemarket, therefore the gateway associates a higher priority level withmessage 206. Once this determination is made, data from message 206 isbuffered, and then sent to the client device without being stored in thedata structure 216. When the client device receives the higher prioritydata of message 206, the software at the client device may process thatdata for the trader to utilize as quickly as possible.

A buffer is a temporary storage area, usually in Random Access Memory(RAM), used for the purpose of acting as a holding area which enablesthe CPU to manipulate the data before it is transferred to the nextdevice. It should be understood that buffering the message preferablyoccurs at such a rapid rate that the message is ultimately sent to theclient device in near real-time, however, the system could be configuredto include a time delay if the trader desired. It should also beunderstood that the example embodiments are not limited to a system thatrequires buffering.

Message 208 is received at the gateway following message 206. Based onthe message header contained in message 208, the gateway determines thatmessage 208 contains information relating to quantities at pricesoutside of the inside market and therefore considers message 208 to beof the lower priority level. As shown in FIG. 2, the gateway stores thelower priority data of message 208 in data structure 216 until apre-defined condition is satisfied.

Similarly, message 210 is received at the gateway. Based on the messageheader contained in message 210, the gateway determines that message 210also contains information relating to quantities at prices outside ofthe inside market and therefore considers message 210 to also be of thelower priority level. As shown in FIG. 2, the gateway stores the lowerpriority data of message 210 in data structure 216 with message 208until a pre-defined condition is satisfied. It should be understood thatthe lower priority data of messages 208 and 210 may be coalescedtogether to create one single message in data structure 216.

For example, a pre-defined condition could be defined to send any storeddata from a lower priority level message along with a higher prioritymessage if and when at a later time, a higher priority level message isreceived from the electronic exchange. Higher priority level messagesmight include messages related to the inside market, market changeswithin a range of price levels from the inside market, trades, or anyother item of interest.

In another example, a pre-defined condition may be a time period definedby a trader or by the electronic trading system, such that any coalescedlower priority message data may be sent to the client device as soon asthe user-defined time period expires.

According to another example, a pre-defined condition may be based on anevent, such as the receipt of a lower priority message once thepre-defined time period has expired. For example, once the pre-definedtime period expires, any coalesced lower priority message data would besent to the client device with the next received message (low or highpriority).

According to yet another example, a pre-defined condition may be basedon an event, such as when the processor has been inactive for aspecified time period and there is coalesced lower priority data storedin the data structure waiting to be sent to the client device.Specifically, if there is any lower priority market data stored in thedata structure after a period of inactivity in the processor, then thegateway will send that lower priority message data to the client device.For example, the inside market may, in some instances, jump dramaticallyand have a series of fast market updates, however, this burst in themarket may be very brief. The market jump may be followed by a period ofinactivity. In the previously described examples, the lower prioritymarket information received during the burst in the market may be storedin the data structure until the time period expires or until the nextmessage is received. However, the market information received during themarket burst is extremely important to the trader and waiting for eitherthe time period to expire or the receipt of another message may causethe market information at the client device to be inaccurate anddelayed. It is therefore beneficial to send any lower priority marketinformation as soon as the processor determines that a period ofinactivity has occurred and that there is coalesced lower priority datato be sent.

In another example, such as in the case of when the market has closed,waiting for the next received message, as described above, might meanthat the gateway is waiting to send stored coalesced lower priority datafor an extended period of time, possibly even until the next tradingday. Again, the processor may recognize a period of inactivity, and sendany lower priority data stored in the data structure instead of waitingfor the pre-defined time period to expire or for another message toarrive.

Additionally, the pre-defined condition may be a combination of any ofthe previously discussed pre-defined conditions, for instance a definedtime period may be used in conjunction with the receipt of a higherpriority message.

In another example, message delivery based on the example provided abovemay be modified upon a determination by the gateway that the market isfast or slow. A gateway may determine if a market is fast or slow bymonitoring how many messages are received within a user-defined timeperiod. If the market is slow, instead of using pre-defined conditionsas the basis for delivery of messages to the client device, the gatewaymay bypass the rules for prioritizing messages as described above andsend all of the received messages to the client device without storingthem in the data structure or considering priority levels for thereceived messages. With respect to a fast market, e.g. a market withmany updates, the gateway may use any of the previously discussedpre-defined conditions or may choose to only send the higher prioritymessages to the client device so as to reduce the bandwidth usage. Inthis example, a fast market can be determined by also monitoring thenumber of messages received with in a user-defined time period. If theamount of messages received during the user-defined time period isgreater than a pre-defined number, then the market is considered fast.In this situation, the lower priority messages may for example, bestored in the data structure but not sent to the client device until thestate of the market has changed.

Based on the pre-defined condition, the gateway may determine whichmessages of the lower priority level should be sent and when they shouldbe sent the client device, resulting in optimal utilization of thenetwork bandwidth and system resources between the gateway and theclient device. It may also significantly reduce processing load at theclient device. It should be understood that although the exampleembodiments reference one client device, that multiple client devicescould be used and generally referred to as the client side.

According to an example embodiment, assume that the pre-definedcondition has been defined to send any coalesced lower priority messagedata that is stored in data structure 216 to the client device alongwith any higher priority message data that is received at the gateway.Message 212 then arrives at the gateway and contains data relating tothe inside market, therefore message 212 is associated with the higherpriority level. When message 212 arrives at the gateway, the data ofmessage 212 will be sent directly to the client device along with anycoalesced lower priority message data being stored in data structure216. When message 212, a higher priority level message, arrives at thegateway, the pre-defined condition is considered satisfied by thegateway. Once message 212 is received, the coalesced data of messages208 and 210 are retrieved from data structure 216, and the coalesceddata of messages 208 and 210, and the data of message 212 are sent tothe client device at the same time. It should be understood that if anadditional lower priority message was stored in data structure 216 withmessages 208 and 210, the messages may be coalesced together to create asingle message. For example, if a lower priority message arrived at thegateway containing the market information “Quantity 100 at Price 100”,the message would be stored in the data structure. However, if anotherlower priority message arrived containing the market information“Quantity 50 at Price 100”, then the two messages may be coalesced andthe previous quantity of “100” would be overwritten by the more updatedquantity of “50.” It is advantageous to utilize coalescing as a methodto reduce the overall amount of messages sent to the client device.

As previously stated, a trader may define a range of price levels aroundthe inside market to be used in determining the priority level of themessage. The range of price levels may be user-configurable and maydefine price levels the trader is most interested in. For example, arange of price levels of “2” would define “2” price levels above thelowest available offer price, the inside market, and the “2” pricelevels below the highest available bid price. When a message is receivedat gateway 104 that includes market information relating to a changewithin the “2” price levels above or below the inside market, then thegateway may associate the higher priority level with the message dataand send it to the client device as quickly as possible. It should beunderstood that a trader could define multiple ranges of price levels,each being associated with a different priority level. For example, thepre-set criteria for the higher priority level may be prices within “2”price levels of the inside market. The next priority level may be priceswithin the next “3” price levels, etc.

FIG. 3 is a flow chart illustrating an example method for prioritizeddata delivery in an electronic trading environment. It should beunderstood that the flow chart only shows the functionality andoperation of a possible implementation of the present embodiments. Inthis regard, each block may represent a module, a segment, or a portionof the program code, which includes one or more executable instructionsfor implementing specific logical functions or steps in the process.Alternative implementations are included within the scope of the exampleembodiments of the present invention in which functions may be executedout of order from that shown or discussed, including substantiallyconcurrent or in reverse order, depending on the functionality involved,as would be understood by those reasonably skilled in the art of thepresent invention.

At step 302, a message is received at the gateway (or anotherintermediary device) from the electronic exchange. The message containsmarket information related to a tradeable object.

At step 304, the gateway determines what market information is containedin the message by examining the message header (or some other part ofthe message). Based on the pre-set criteria, the data of the message isassociated with a priority level.

At step 306, the gateway determines if the message data is of the higherpriority level. According to an example embodiment described above, ifthe message contains market information relating to the inside market ortrade related information such as the last traded price or quantity, themessage data is considered to be of the higher priority level.Otherwise, the message data is considered to be of the lower prioritylevel and is stored in the data structure until a pre-defined conditionis satisfied.

If the message data is of a higher priority, the gateway determines ifthere is any other lower priority information stored in the datastructure, and if there is the gateway will send both the higherpriority and lower priority market information to the client device atstep 308. If the data structure does not contain any lower prioritymarket information, the higher priority market information will be sentto the client device by itself. Once the market information is receivedat the client device, the market information may be processed andutilized by the trader for use in trading and analyzing the currentmarket.

If the message data is of the lower priority level, the gatewaydetermines if the pre-defined condition has been satisfied at step 310.According to the example embodiment, if the pre-defined condition hasbeen satisfied, the gateway will send the lower priority informationstored in the data structure to the client device at step 312. If thepre-defined condition has not been satisfied, the gateway stores andcoalesces the data of the lower priority message in a data structure atstep 314 until a pre-defined condition is satisfied. As previouslydescribed, the pre-defined condition can range from a time basedcondition, a market based condition, the receipt of a specified type ofmessage, or some other user-defined process used to determine when tosend messages to the client device. It should be understood that a lowerpriority message may never get delivered to the client if the lowerpriority message data was coalesced with other lower priority messagedata, for example.

CONCLUSION

The example embodiments discussed above describe a system and method forprioritized data delivery in an electronic trading environment. Byprioritizing the messages associated with a tradeable object, the systemand network resource usage may be optimally utilized. The methodincludes, for example, associating a higher priority level with amessage comprising market information related to the inside market andassociating a lower priority level with a message comprising market datarelated to the quantities at prices outside the inside market. Based onthe priority level associated with a message, the message data may bestored in a data structure until a pre-defined condition is satisfied,or sent directly to the client device, such that there is not as muchmessage data being sent to the client device and the bandwidth andsystem resource usage are optimally reduced.

The above description of the example embodiments, alternativeembodiments, and specific examples, are given by way of illustration andshould not be viewed as limiting. Further, many changes andmodifications within the scope of the present embodiments may be madewithout departing from the spirit thereof, and the present inventionincludes such changes and modifications.

It will be apparent to those of ordinary skill in the art that methodsinvolved in the system and method for dynamically determining quantityfor risk management may be embodied in a computer program product thatincludes one or more computer readable media. For example, a computerreadable medium can include a readable memory device, such as a harddrive device, CD-ROM, a DVD-ROM, or a computer diskette, having computerreadable program code segments stored thereon. The computer readablemedium can also include a communications or transmission medium, suchas, a bus or a communication link, either optical, wired or wirelesshaving program code segments carried thereon as digital or analog datasignals.

The claims should not be read as limited to the described order orelements unless stated to that effect. Therefore, all embodiments thatcome within the scope and spirit of the following claims and equivalentsthereto are claimed as the invention.

1. (canceled)
 2. A method for prioritized data delivery to a client inan electronic trading environment, comprising: receiving at anintermediary device a first message associated with a tradeable object,the first message comprising data associated with a low priority level;storing the data from the first message in a data structure; when a timeperiod expires and a second message comprising data associated with ahigh priority level was not received during the time period, sending thedata from the first message to the client; and when a second messagecomprising data associated with a high priority level is received duringthe time period, sending to the client the data associated with the highpriority level together with the data associated with the low prioritylevel upon receiving the second message.
 3. The method of claim 2,wherein the second message is associated with the high priority levelbased on a type of message associated with the second message.
 4. Themethod of claim 3, wherein the type of message associated with the highpriority level is user-defined.
 5. The method of claim 2, wherein thesecond message comprises an inside market data, wherein the insidemarket data comprises a highest bid price and a lowest ask price.
 6. Themethod of claim 2, wherein the second message comprises trade relateddata.
 7. The method of claim 6, wherein the trade related data comprisesa last traded price.
 8. The method of claim 6, wherein the trade relateddata comprises a last traded quantity.
 9. The method of claim 2, whereina period of market inactivity is detected when the first message isreceived.
 10. The method of claim 2, further comprising: receiving athird message prior to receiving the second message, wherein the thirdmessage comprises data associated with the low priority level; andstoring the data associated with the third message in the datastructure.
 11. The method of claim 10, further comprising: coalescingthe data associated with the first message and the data associated withthe third message to generate coalesced market data; and wherein sendingto the client the data associated with the high priority level togetherwith the data associated with the low priority level upon receiving thesecond message comprises sending the coalesced market data together withthe data associated with the second message.
 12. The method of claim 2,wherein the intermediary device is located at an electronic exchange.13. The method of claim 2, wherein the intermediary device is a gateway.14. The method of claim 2, wherein the intermediary device is notlocated at an electronic exchange.
 15. The method of claim 2, whereinthe client comprises a client network side device.
 16. The method ofclaim 2, wherein the client comprises a computer.
 17. A computerreadable medium having stored therein instructions to execute a methodfor prioritized data delivery to a client in an electronic tradingenvironment, comprising: receiving at an intermediary device a firstmessage associated with a tradeable object, the first message comprisingdata associated with a low priority level; storing the data from thefirst message in a data structure; when a time period expires and asecond message comprising data associated with a high priority level wasnot received during the time period, sending the data from the firstmessage to the client; and when a second message comprising dataassociated with a high priority level is received during the timeperiod, sending to the client the data associated with the high prioritylevel together with the data associated with the low priority level uponreceiving the second message.
 18. The computer readable medium of claim17, wherein the second message is associated with the high prioritylevel based on a type of message associated with the second message. 19.The computer readable medium of claim 18, wherein the type of messageassociated with the high priority level is user-defined.
 20. Thecomputer readable medium of claim 17, wherein the second messagecomprises an inside market data, wherein the inside market datacomprises a highest bid price and a lowest ask price.
 21. The computerreadable medium of claim 17, wherein the second message comprises traderelated data.
 22. The computer readable medium of claim 17, wherein themethod further comprises: receiving a third message prior to receivingthe second message, wherein the third message comprises data associatedwith the low priority level; and storing the data associated with thethird message in the data structure.
 23. The computer readable medium ofclaim 22, wherein the method further comprises: coalescing the dataassociated with the first message and the data associated with the thirdmessage to generate coalesced market data; and wherein sending to theclient the data associated with the high priority level together withthe data associated with the low priority level upon receiving thesecond message comprises sending the coalesced market data together withthe data associated with the second message.